Your round-up of the week's biggest video game news stories.

Here's your round-up of the biggest video game news stories from the past seven days, including ongoing Pokémon Go drama, the latest report into Nintendo's NX launch line-up and third party deals, and the launch of Overwatch's first seasonal event.

Below are the original stories and some intro text. For more detail, click the headlines.

Overwatch introduces Lucioball game mode as part of Summer Games event

Blizzard is introducing a new game-mode to hit online shooter Overwatch, as part of its inaugural Olympics-themed 'Summer Games' celebration. New skins and items are also being made available through the purchase of Loot Boxes.

Lucioball is a 3-on-3 mode in which everyone plays as Brazilian Support hero Lucio, attempting to score goals in a manner similar to 2015 summer hit Rocket League. The new arena for the mode is also reminiscent of Psyonix's classic. Both will be available to all players free of charge until 22 August when the seasonal event ends.

Nintendo bolsters NX line-up with third party support and Game Freak Pokemon title

Nintendo is working hard to ensure their upcoming NX console does not suffer in the same way as the Wii U and 3DS, according to a new report.

Sources close to Nintendo have revealed that the firm is busy securing third-party deals with the likes of Activision, Square Enix and Warner Bros already on board, alongside its established relationships with Ubisoft and Sega.

The report form MCV also revealed that Pokémon developer Game Freak will develop a new game in their beloved franchise for the device. It'll be one of a trio of launch-window games including The Legend of Zelda: Breath of the Wild and a new Mario title – all to be released within six months of the console's launch.

After a turbulent end to Pokémon Go's first month in the wild, developer Niantic has addressed fan concerns following a major update that removed features and disabled third-party sites which allowed users to easily track Pokémon in the augmented-reality mobile game.

This restricting of access to the game's API came in tandem with the removal of an in-game tracking feature that had been broken for a few weeks, and left Go with no way for users to track where Pokémon were spawning. Fans were not happy.

Over the weekend Pokémon Go players got excited when legendary bird Articuno was spotted at a US gym. It seems however, that instances of the bird and other legendaries Zapdos and Moltres appearing in the game have been either a mistake or an act of hacking the game.

As a result, developer Niantic will be taking the legendary birds away from players who have them. In a statement to IGN a representative said: "We recently noticed that a few legendary Pokémon got into a few accounts when they shouldn't have.